Function CopyToString

common/values/bytes_value.h:212–214

  std::string ToString() const { return value_.ToString(); }

  void CopyToString(std::string* absl_nonnull out) const {
    value_.CopyToString(out);
  }

  void AppendToString(std::string* absl_nonnull out) const {
    value_.AppendToString(out);